1201121120 has 48 divisors (see below), whose sum is σ = 2842384608. Its totient is φ = 479646720.

The previous prime is 1201121113. The next prime is 1201121149. The reversal of 1201121120 is 211211021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95012 + ... + 106908.

It is an arithmetic number, because the mean of its divisors is an integer number (59216346).

Almost surely, 2^1201121120 is an apocalyptic number.

1201121120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201121120 is an abundant number, since it is smaller than the sum of its proper divisors (1641263488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1201121120 is a wasteful number, since it uses less digits than its factorization.

1201121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12543 (or 12535 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1201121120 is about 34657.1943469174. The cubic root of 1201121120 is about 1062.9894016685.

Adding to 1201121120 its reverse (211211021), we get a palindrome (1412332141).

The spelling of 1201121120 in words is "one billion, two hundred one million, one hundred twenty-one thousand, one hundred twenty".